ESPE Abstracts

Congenital adrenal hyperplasia (CAH) patients have a higher frequency of obesity, visceral adiposity, hyperinsulinism, insulin resistance and hyperandrogenism. There is increasing evidence that low vitamin D status is associated with impaired β-cell function, insulin resistance and impaired glucose tolerance.Objectives: This pilot aimed to determine the status of serum 25 (OH) D levels in CAH female patients who are followed up in Diabetes Endocrine...

Vitamin D dependent rickets type 1A (VDDR-IA) is inherited in an autosomal recessive pattern and caused by mutations in CYP27B1 gene encoding enzyme 1α-hydroxylase. Deficiency of 1α-hydroxylase leads to decrease of 1,25(OH)2 vitamin D production. VDDR-IA usually manifests clinically during the 1st year of life. Clinical features of VDDR- IA include progressive growth retardation, hypotonia, rachitic skeletal deformities, hypocalcemic seizures in early infancy. Serum ...

Background: Klinefelter syndrome (KS) has long-term consequences on bone health. However, studies regarding bone status and metabolism in childhood and adolescence are very rare.Objective and hypotheses: The purpose of our study was to evaluate bone status and metabolism in a cohort of KS children and adolescents.Method: This cross-sectional study involves 40 (mean age 13.7±3.8 years) KS children and adolescents and 80 age-mat...

Background: However, no study has considered the effect of a supernumerary X chromosome on bone mineral status and bone metabolism.Objective and hypotheses: To evaluate bone mineral status and metabolism in a cohort of patients with nonmosaic triple X syndrome.Method: Nineteen girls (median age 10.9, range 7.7–15.9 years) with nonmosaic triple X syndrome were cross-sectionally studied and compared to an age- and body-size-matc...

Background: Pseudohypoparathyroidism type Ib (PHP-Ib) is due to a maternal loss of GNAS exon A/B methylation and leads to decreased expression of the stimulatory G protein (Gsα) in specific tissues. Evidence suggests an increased incidence of imprinting disorders in children conceived by Assisted Reproductive Technologies (ART). Nevertheless, no associations between ART and PHP – Ib have been found to date.Clinical case: 7.4-years-old male with...

Background: The prevalence of childhood obesity has been rapidly increasing worldwide and the last report of World Health Organisation define it as epidemic and one of the most serious global public health challenges for the 21st century. Obese children and adolescents are at an increased risk of developing various health problems including type 2 diabetes mellitus, hypertension, osteoarthritis, cardiovascular disease. Obesity is a risk factor for vitamin D deficiency. Vitamin...

Introduction: Hyperostosis-hyperphosphataemia syndrome (HHS) is a rare autosomal recessive condition caused by inactivating mutations in the GALNT3 gene, characterised by elevated serum phosphate and 1,25(OH)2 vitamin D, increased urinary tubular reabsorption of phosphate and hyperostosis of long bones.Case report: A 15-year-old boy (weight +1.05 SD; height −0.1 SD) with consanguineous parents of Palestinian descent, presented w...

Background: Folate and cobalamin are needed for synthesis of methionine, a substrate of methylation in epigenetic, and epigenomic pathways. Methyl donor deficiency (MDD) leads to hyperhomocysteinemia, which has been related to osteoporosis in humans and disruption of epiphyseal cartilage and bone development in rodents. Recent studies have revealed evidence for association between 25(OH)D3 and homocysteine levels, however, underlying mechanisms remain elusive.<p...

Background: Adrenal insufficiency in children is rare and potentially serious because of the risk of acute adrenal insufficiency. This complication is lethal in the absence of prompt and appropriate treatment. Aetiologies are dominated by the genetic causes.Objective and hypotheses: Report diagnostic circumstances,phenotypic forms and causes of adrenal insufficiency in children and adolescents.Method: This is a retrospective study ...

Background: There is increasing interest in vitamin D nutrition during pregnancy because of widespread reports of a high prevalence of low vitamin D status in pregnant women in high-latitude areas. It has been related to adverse events in mother and child. Neonates present a greater risk of hypocalcaemia, rickets and a higher incidence of infections during the 1st year of life.Objective and hypotheses: Real situation of pregnant women and newborn in rela...